I think it is appropriate, to make this a little easier, to point out that the pine cones in question are not from Pinus Ponderosa, but from Pinus Sylvestris.
All you good people with stopwatches who have been scouring parks and forests for feeding squirrels, over the weekend, can now come home again and start guessing.

I do wonder what kind of person decides it would be fun to time how quickly a squirrel manages to eat all the seeds from a pine cone. I mean, that would be like someone who spends part of their life carefully gluing back together corks from old port bottles which have fallen apart when being opened.